Replacement Windows

The timeless choice for windows, updated with modern features and materials available only from Infinity.
  • Build your own Bay with Casement or Double Hung windows
  • Available with operable center unit
  • Wooden seat board and trim designed to match your home’s existing woodwork
  • Insulated to a thermal rating of R-8
Casement Bay with Picture Center Unit

Benefits of Bay Style Replacement Windows

Bay windows are built to capture light from three angles and can vary in size, from a large, sunlit living space to cozy reading nook. Infinity from Marvin’s Bay windows are custom-built to your space using durable Ultrex® fiberglass to create a striking update to your home.

Virtually Maintenance-free

Ultrex is 8x stronger than vinyl and resists weathering, warping and thermal expansion.

Better Views

The strength of Ultrex allows narrower profiles for more daylight and expanded views.

Built for Life®

Years of research and innovation have resulted in windows designed to last a lifetime.

Bay Replacement Window Design Details

Our timeless, durable finishes can complement your home’s style or offer a chance to update its look. Our finishes resist UV degradation and weathering or chipping.

Interior Finish Options

Finish samples are approximate. Please schedule an in-home consultation or visit a showroom to see actual color samples.

Hardware Options for Bay Replacement Windows

Our durable hardware offers consistent performance from day one and is available in a variety of finish options.
White hardware finishWhite
Sierra hardware finishSierra
Taupe hardware finishTaupe
Nickel hardware finishNickel
Chrome hardware finishChrome
Antique hardware finishAntique
Bronze hardware finishBronze
Brass hardware finishBrass
Finish samples are approximate. Please schedule an in-home consultation or visit a showroom to see actual color samples.

Custom Bay Replacement Window Configurations

Your custom Bay window unit includes all options that are available on Infinity Double Hung and Casement windows. The center unit can be an operable Double Hung or Casement window, or a non-operable Picture window.
Casement Bay with Operator Center Unit
Double Hung Bay with Operator Center Unit
Casement Bay with Picture Center Unit
Double Hung Bay with Picture Center Unit
Design Your Windows

Lifetime Warranty

Infinity windows are built to last, but we know life happens. That’s why they're covered by a Lifetime Warranty.
  • Ultrex Fiberglass Frame and Sash
  • Hardware
  • Glass breakage
  • Glass seal failure
  • Screens
  • No Service Fees
Kids in a living room with Infinity replacement windows

Schedule your free in‑home consultation

We’ll connect you with an Infinity Project Consultant within 1 business day


Save 40% on combined purchases of 5 or more windows and doors.

Plus, choose the flexible financing plan that works for you

View offer details